Say hello to Dr Stuart As a leading ethnobotanist I've spent more than 30 years studying and using plants that are really useful to people. I know that for the best quality and flavour, only well-grown, carefully harvested herbs will do. That's why I'm personally involved in selecting and blending the 'pick of the crop' for all our extraordinarily good teas. In fact, the herbs inside are so good and bursting with flavour, I've called them 'Active Botanicals'.